Asymptomatic multiple splenic cysts in a pulmonary neoplasm patient

Splenic cysts are rare, and their treatment remains challenging. A 66-year-old man scheduled to undergo surgical treatment for a pulmonary neoplasm was found with abdominal computed tomography and ultrasonography to have multiple cysts in the body of the spleen. He underwent pulmonary wedge resection, and histological examination showed that the lesion of the left lung was an adenocarcinoma. The patient recovered without complications after the operation. Because the splenic cysts were small and caused no abdominal symptoms, the patient was advised to undergo careful follow-up. Large splenic cysts warrant surgical treatment, whereas careful follow-up is recommended for small asymptomatic splenic cysts.